Rihanna throws shade at HS teen

Rihanna packs a powerful punch on Twitter. As John Basedow (@JohnBasedow) reports, the 'Monster' singer tweeted pics and comments, like #PromBat, appearing to mock a 16-year-old girl who wore a Rihanna-inspired winged dress to her prom, and then commended an EMT who vogued out to her song 'Pour It Up' in a viral video on YouTube. (Photo Credit: Getty)